Abstract: Teaching a specialty language as one of the aspects of a foreign language course requires the teacher to pay special attention to the vocabulary. One of the strategies for expanding the vocabulary of students is the use of English-language video materials devoted to the topics studied and lexically echoing them. The object of the study is the influence of English-language video materials with a certain set of words and notions as one of the tools for expanding vocabulary. The hypothesis was that the effectiveness of using this type of educational work to expand the vocabulary of students. The experiment was conducted in groups studying the specialty language. The authors of the study selected experimental and control groups, and a preliminary test was conducted before the experiment. After the course, students were offered a post-test, which consisted in checking students' vocabulary in control and experimental groups and an oral interview based on the results of training. The main conclusions of the study are: the results of the experiment show that the use of specially selected video materials has a positive impact on the development of special vocabulary. The final conversation of the teachers with the students of the experimental groups revealed a high level of satisfaction with the course and significant signs of an increase in motivation to further study the language of the specialty. Despite some limitations of the study, the authors consider the results of the experiment to be a weighty argument in favor of using video materials as an effective tool for expanding vocabulary.